Dead · support ended October 2021

Your Silverlight app has no browser to run in. The code still says what it does.

Where you are

Microsoft ended Silverlight support on 12 October 2021 and no current browser loads the plug-in. So the app is frozen on an old machine with an old browser, or someone is rewriting it, and rewrites go wrong because the people who knew what the app actually did have usually left and the code is all that is left to read.

How the move goes

I have written Silverlight and I have migrated it. The move is a Blazor or ASP.NET Core front end over the same database, one screen at a time, old and new side by side until the new screen has proved itself in production. If the app came out of LightSwitch or WCF RIA Services, I know what the generated code looks like and what it was doing, which is what makes this tractable instead of a rewrite from a blank page.

Tell me what it runs on All Silverlight work

Silverlight engagements

7 shipped on it, migrated off it, or both

2011–2024Still running

Mason & Mason / DSM, Inc.

Right-of-way appraisal and eminent domain · Sole developer and architect

Thirteen years as the only developer on one firm's system: LotusScript inside their Notes estate, then Silverlight, then LightSwitch, then Esri ArcGIS cloud sites over SQL Server, each rebuild done while the previous one stayed live.

Silverlight LightSwitch Lotus Notes C# .NET SQL Server Lotus Notes / Domino

2009–2011Shipped

The Comp Specialists, LLC

Workers' compensation · Interim CTO and lead architect

Visio and PDF treatment pathways turned into a data-driven subscription site: merge patient details into the pathway and letter, charge per print via Authorize.Net, stamp every print with a serial number encoding account, user, pathway and print run.

Silverlight .NET ASP.NET SQL Server Visio

2013–2023Delivered

ACD LLC

Cryogenic pumps and turboexpanders · Lead developer

A Silverlight front end over WCF brokering requests to a pool of VMs each running a headless copy of the WPF sizing program, with a watchdog, an admin router, and generic external logins mapped to companies only on the inside.

Silverlight WCF C# .NET WPF IIS

2013–2015Handed over

CAPS Payroll

Entertainment payroll · Sole developer and rescuer

A residuals engine rewritten from scratch: quarterly revenue per market in, union contract break points and percentages applied, pension and health subtracted, one statement per union out, with back-fill and late-joiner adjustments.

LightSwitch Silverlight C# .NET SQL Server Azure

2012Delivered

Deluxe Digital Studios

Film localisation and post-production · Senior developer

Silverlight and XAML subtitle authoring with waveform sync and safe-area overlays, plus a command-line encoder over the Expression Encoder SDK and a job manager for the GPU farm, with error trapping the original never had.

Silverlight WCF C# .NET XAML WCF RIA Services

2008–2011Handed over

VectorUSA

Network and infrastructure contracting · Sole developer

WPF field capture with a signature step, a Silverlight approval module, a self-mailing five-day report, duplicate-date and pay-period rules in T-SQL, and a web-service layer ripped out when it would not hold up over the VPN.

Silverlight Microsoft Access .NET WPF ASP.NET web services SQL Server

2010–2011Ended